Benzoxazole
- Formula: C7H5NO
- Molecular weight: 119.1207
- IUPAC Standard InChI: InChI=1S/C7H5NO/c1-2-4-7-6(3-1)8-5-9-7/h1-5H
- IUPAC Standard InChIKey: BCMCBBGGLRIHSE-UHFFFAOYSA-N
- CAS Registry Number: 273-53-0
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: 1-Oxa-3-aza-1H-indene; 1-Oxa-3-azaindene; USAF ek-5017
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Gas phase thermochemistry data
Go To: Top, Gas phase ion energetics data, Gas Chromatography, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | 45.14 ± 0.52 | kJ/mol | Ccb | Steele, Chirico, et al., 1992 | DSC |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, Gas Chromatography, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data evaluated by: Edward P. Hunter and Sharon G. Lias
View reactions leading to C7H5NO+ (ion structure unspecified)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Proton affinity (review) | 891.6 | kJ/mol | N/A | Hunter and Lias, 1998 | |
| Quantity | Value | Units | Method | Reference | Comment |
| Gas basicity | 859.8 | kJ/mol | N/A | Hunter and Lias, 1998 |
Gas Chromatography
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Normal alkane RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | DB-1 | 1067. | Chen and Ho, 1999 | 60. m/0.32 mm/1. μm, He, 2. K/min; Tstart: 40. C; Tend: 260. C |
| Capillary | DB-1 | 1067. | Chen and Ho, 1998 | 60. m/0.32 mm/1.0 μm, He, 2. K/min; Tstart: 40. C; Tend: 260. C |
Normal alkane RI, polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | Carbowax 20M | 1733. | Liardon and Ledermann, 1980 | H2, 2. K/min; Column length: 39. m; Column diameter: 0.30 mm; Tstart: 60. C; Tend: 220. C |
References
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Steele, Chirico, et al., 1992
Steele, W.V.; Chirico, R.D.; Knipmeyer, S.E.; Nguyen, A.,
The thermodynamic properties of benzothiazole and benzoxazole,
J. Chem. Thermodyn., 1992, 24, 449-529. [all data]
Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G.,
Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update,
J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018
. [all data]
Chen and Ho, 1999
Chen, J.; Ho, C.-T.,
Comparison of volatile generation in serine/threonine/glutamine-ribose/glucose/fructose model systems,
J. Agric. Food Chem., 1999, 47, 2, 643-647, https://doi.org/10.1021/jf980771a
. [all data]
Chen and Ho, 1998
Chen, J.; Ho, C.-T.,
Volatile compounds generated in serine-monosaccharide model systems,
J. Agric. Food Chem., 1998, 46, 4, 1518-1522, https://doi.org/10.1021/jf970934f
. [all data]
Liardon and Ledermann, 1980
Liardon, R.; Ledermann, S.,
volatile components of fermented soya hydrolysate. II. Composition of basic fraction,
Z. Lebensm. Unters. Forsch., 1980, 170, 3, 208-213, https://doi.org/10.1007/BF01042542
. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Gas Chromatography, References
- Symbols used in this document:
ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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